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If the nominal light output of a projector was measured at 5000 ANSI lumens using...

If the nominal light output of a projector was measured at 5000 ANSI lumens using an f/1.4 lens, what would happen if the lens was changed to an f/2.8 large zoom?

A.

The projected image will be darker

B.

The projected image will be brighter

C.

The screen will need to be changed to 1:1 gain

D.

The screen will need to be changed to a high contrast screen

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